Cub Cadet SLTX1000 User Manual
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LTX Series Riding Tractors
NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outd oor power
equipment of the kind described in this publication, and are no t intended for use by untrained or inexperienced individu als.
These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperienced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all
instructions and use common sense when working on power equipment. This includes the contents of the product’s Operators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication,
although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to
the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these
instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a
product. The company reserves the right to make changes at any time to this publication without prior notice and without
incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations
used in this publication are for reference use only and may not depict actual model and component parts.
© Copyright 2012 MTD Products Inc. All Rights Reserved
Table of Contents
Chapter 1: Introduction
Professional Shop Manual intent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Fasteners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description of the 900 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Model and Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2: Engine related parts
Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Fuel tank removal/replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fuel Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Evaporative (EVAP) emissions system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Roll over valve vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 3: Steering
Steering alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sector gear and steering pinion gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Steering shaft and hex bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pivot bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 6B: Electronic Power Steering
Rubber Torsion Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
EPS Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
EPS motor & gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Troubleshooting the EPS (without the 725-05419 EPS tester) . . . . . . . . . . 27
EPS removal/replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Chapter 4: Body panels
What is covered by this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Hood components: Headlight removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Hood components: side vent removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Hood components: grill removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Hood components: pivot bracket removal . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Seat and Fenders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Dash Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
I
Chapter 5: Hydro. Drive and brake system
About this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Externally repairable drive system problems . . . . . . . . . . . . . . . . . . . . . . . . 56
Indications that a transaxle is not warrantable . . . . . . . . . . . . . . . . . . . . . . . 61
Brake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Neutral control adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Linkage: pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Pedal shaft assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Belt control; tensioner and idler pulleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Drive belt replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Changing transaxle hydraulic fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Transaxle removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Chapter 6: CVT Drive and brake system
About this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
About the variable speed drive system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Externally repairable drive system problems: . . . . . . . . . . . . . . . . . . . . . . . . 94
Indications that a transaxle is not warrantable . . . . . . . . . . . . . . . . . . . . . . . 97
Brake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Gear selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Tensioner pulley control rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Linkage: pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Pedal shaft assembly removal: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Linkage: pedal tie strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Belt control: tension make-up pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Belt control: variable speed pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Belt control: tensioner pulleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Drive belt replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Transaxle removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Transaxle repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Chapter 7: electrical system
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
RMC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Key switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
RMC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
RMC module plug test (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
RMC module plug test (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Electric PTO switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
PTO relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
PTO switch (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Brake switch (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Brake switch (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Park brake switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Reverse Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Seat Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Starter solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
II
Start Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Run Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Run Circuit / Reverse Caution mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Engine shutdown circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Charging circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
PTO Circuit (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Reverse Mower Control (RMC) circuit operation . . . . . . . . . . . . . . . . . . . . 170
Electrical diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Electrical environment: AC Vs. DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Ohm’s Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Kirchhoff’s Current Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Kirchhoff’s Voltage Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
How the system is wired together . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Types of circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Series/parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Shorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Increased resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
The Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Digital multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Wiring diagram or schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Fused jumper wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Test lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Self-powered continuity lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Ammeters and specialized charging system testers . . . . . . . . . . . . . . . . . 181
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Charging the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Checking battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Battery Testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Adjustable load testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Fixed load testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Conductance testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Battery discharge test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Storage of batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Electrical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Voltage Drop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Testing switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
III
Chapter 8: Cutting Decks and lift shaft
Cutting decks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Deck removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Cleaning the deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
To clean the deck while it is removed:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Spindles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
PTO belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Timing belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Leveling the deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Side to Side Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Front To Rear Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Deck Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Deck lift shaft assembly bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Deck lift shaft assembly removal/replacement . . . . . . . . . . . . . . . . . . . . . . 218
Deck lift links and cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Engine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Chapter 9: Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
The spark plug(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Air filter and foam pre-cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Servicing the fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Clean the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Lubricate the pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Hydro-gear Appendix
IV
Introduction
CHAPTER 1: INTRODUCTION
Professional Shop Manual intent
This Manual is intended to provide service dealers with an introduction to the mechanical aspects of the LTX
series of tractors.
• Detailed service information about the engine will be provided by the engine manufacturer, in most cases.
Disclaimer: The information contained in this manual is correct at the time of writin g. Both the prod u ct an d th e inf or mation about the product are subject to change without notice.
About the text format:
NOTE: is used to point out information that is relevant to the procedure, but does not fit as a step in the pr oce dure.
• Bullet points: indicate sub-steps or points.
! CA UTION! CA UTION
! WA RNIN G! WA RNIN G
! DANGER! DANGER
Disclaimer: This manual is intended for use by trained, professional technicians.
• Common sense in operation and safety is assumed.
• In no event shall MTD or Cub Cadet be liable for poor text interpretation or poor execution of the procedures described in the text.
• If the person using this manual is uncomfortable with any procedures they encounter, they should seek
the help of a qualified technician or Cub Cadet Technical Support.
Fasteners
Caution is used to point out potential danger to the technician, operator, bystanders, or surrounding property.
Warning indicates a potentially hazardous situation that, if not avoided, could result in death
of serious injury.
Danger indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury. This signal word is to be limited to the most extreme situations.
• Most of the fasteners used on these mowers are sized in fractional inches. The engine and transmissions
are metric. For this reason, wrench sizes are frequently identified in the text, and measurement s are given
in U.S. and metric scales.
• If a fastener has a locking feature that has worn, replace the fastener or apply a small amount of re leasable thread locking compound such as Loctite® 242 (blue).
• Some fasteners like cotter pins are single-use items that are not to be reused. Other fasteners such as
lock washers, retaining rings, and internal cotter pins (hairpin clips) may be reused if they do not show
signs of wear or damage. This manual leaves that decision to the judgement of the technician.
1
LTX Tractors
! CAUTION! CAUTION
• Be prepared in case of emergency:
Keep a fire extinguisher nearby
Keep a first aid kit nearby
Keep emergency contact numbers handy
• Replace any missing or damaged safety labels on shop equipment.
• Replace any missing or damaged safety labels on equipment being serviced.
• Grooming and attire:
! WARNING! WARNING
! CAUTION! CAUTION
Do not wear loose fitting clothing that may become entangled in equipment.
Long hair should be secured to prevent entanglement in equipment.
Jewelry is best removed.
• Protective gear: includes, but is not limited to
Clear eye protection ................................ while working around any machinery
Protective gloves ..................................... where necessary
Armored footwear.................................... when working around any machinery
Hearing protection ................................... in noisy environments
Chemically resistant gloves..................... when working with chemicals or solvents
Respirator................................................ when working with chemical or solvents
Appropriate tinted eye protection............. when cutting or welding
Flame resistant headgear, jacket, chaps. when cutting or welding
• Remember that some hazards have a cumulative effect. A single exposure may
cause little or no harm, but continual or repeated exposure may cause very serious
harm.
• Clean spills and fix obviously dangerous conditions as soon as they are noticed.
! DANGER! DANGER
2
• Lift and support heavy objects safely and securely.
• Be aware of your surroundings and potential hazards that are inherent to all power
equipment. All the labels in the world cannot protect a technician from an instant of
carelessness.
• Exhaust fumes from running engines contain carbon monoxide (CO). Carbon
monoxide is a colorless odorless gas that is fatal if inhaled in sufficient quantity.
Only run engines in well ventilated areas. If running engines indoors, use an
exhaust evacuation system with adequate make-up air ventilated into the shop.
Introduction
Assembly
Torque specifications may be noted in the part of the text that covers assembly, they may also be summarized in
tables along with special instructions regarding locking or lubrication. Whichever method is more appropriate will be
used. In many cases, both will be used so that the manual is handy as a quick-reference guide as well as a step-bystep procedure guide that does not require the user to hunt for information.
The level of assembly instructions provided will be determined by the complexity of disassembly/reassembly,
and by the potential for unsafe conditions to arise from mistakes made in assembly.
Some instructions may refer to other parts of the manual for subsidiary procedures. This avoids repeating the
same procedure two or three times in the manual.
Description of the 900 series
The 900 series is a new tractor platform intr oduced in the 2009 season. This plat form replaces the traditional 600
series tractor.
New for the 900 series is:
• New stronger frame
See Figure 1.1.
Figure 1.1
• New hood and grill designs
• A new 42” timed deck
• A new 2 blade 46” deck
• Tighter turning radius
3
LTX Tractors
Model and Serial Numbers
The model and serial number tag can be found under
the seat.
number as shown above.
The model number is 13AX90AR010 The break down of what the character mean is as follows:
See Figure 1.2.
The serial number is located to the right of the model
See Figure 1.2.
Model number
Figure 1.2
Serial number
1 ..............................................................................................Cuts grass
....3 ..........................................................................................Lawn tractor
.......A....................................................................................... Sales level/type of create
...........X............................ ... ... ... .... ... ... ... .... ............................. Engine code
.............9. ................................................................................Frame
.................0 ......................................... ... .... ... ... .......................Drive system
....................A.......................................................................... Hood style
.........................R.....................................................................Deck (S = 42”, T = 46”, P=50”, R=42” timed deck)
.............................056 ............................................................. Customer number
The serial number is 1J078H30003. The serial number reads as follows:
1 ..............................................................................................Engineering level
..J............................................................................................. Month of production (J = October)
.....07 .......................................................................................Day of the month
.........8 .....................................................................................Last digit of the year
...........H............................................................ ... .... ... .............Plant it was built in (Martin, TN)
..............3 ................................................................................Assembly line number
.................0003 ....................................................................... Build number of unit
4
CHAPTER 2: ENGINE RELATED PARTS
This manual will cover the engine accessories that are manufactured by Cub Cadet.
IMPORTANT: Refer to the engine manufacturer’s manual for engine specific service information.
Muffler
Remove the muffler by following these steps:
NOTE: The muffler and the exhaust pipes are welded
together . They are replaced as one assembly.
1. Remove the hood and bumper by following the steps
described in Chapter 4: Body/Chassis.
2. Remove the two screws on each side that secure th e
muffler guard bracket.
Screws
See Figure 2.1.
Engine Ralated Parts
Figure 2.1
Screws
Figure 2.2
3. Disconnect the muffler from the engine:
For single cylinder engines:
• Remove the two screws that secure the exhaust
pipe to the cylinder head.
See Figure 2.2.
5
LTX Tractors
• Remove the screw that fastens the muffler support bracket to the cylinder head.
See Figure 2.3.
For twin cylinder engines:
Screw
Support bracket
Figure 2.3
• Remove the two nuts that secure each exhaust
pipe to the cylinder head. See Figure 2.4.
Nuts
Figure 2.4
6
Figure 2.5
Engine Ralated Parts
4. Pull the muffler cover and muffler out together.
5. Rotate the muffler out of the muffler cover.
See Figure 2.5.
6. With the muffler on a work bench, remove the four
screws that hold the muffler deflector to the muffler.
See Figure 2.6.
Screws
Figure 2.6
7. Install the muffler by following the above steps in
reverse order.
8. Test run the tractor before returning to service.
Muffler deflector
7
LTX Tractors
Fuel tank removal/replacement
Remove/replace the fuel tank by following these steps:
Gasoline and its vapors are extremely flammable. Use common sense when working around
! CAUTION! CAUTION
• Work in a well-ventilated area.
• Allow the engine to cool fully before starting work on the tractor.
• Eliminate any sources of possible ignition from the work area, including but not limited to: heat sources,
open flame, potential sparks.
• Clean-up any spilled fuel quickly and properly, disposing of cleaning materials in a way that will not produce a further fire hazard.
• Hold any drained fuel in an approved and safe
container.
1. Open the hood.
2. Drain the fuel in the fuel tank into an approved container.
the fuel system.
NOTE: The tank may be drained by mechanical
syphon or by disconnecting the fuel line from
the fuel filter.
3. Disconnect the fuel tank vent hose from the roll over
valve (if equipped).
4. Remove the four screws that secure the fuel tank
support rod.
5. Work the fuel tank support bracket off of the tractor
6. Slide the fuel tank out from between the dash and
the engine.
7. Remove the fuel line clamp and slide the fuel line off of the fuel tank nipple.
NOTE: The fuel tank has a barbed fitting. Anytime a fuel line is removed from a barbed fitting it should be
8. Install the fuel tank by following the above steps in reverse order.
9. Test run the tractor and check for leaks before returning to service.
See Figure 2.7.
replaced because of the damage caused to the fuel line liner.
Screws
Figure 2.7
8
Fuel Line
Engine Ralated Parts
CSM Cover
Picture courtesy of Avon Automotive
NBR intermediate layer
Reinforcement
Figure 2.8
THV barrier layer
NBR inner liner
The fuel line used by Cub Cadet is GREENbarTM. This
is a multi-layer fuel line that meets the current EPA guidelines.
NOTE: This fuel line has a thin inner liner. If a tear forms in
this inner liner, fuel can get between the liner and
the hose. This will cause the liner to collapse, cut
ting off the fuel flow.
NOTE: Replace the fuel line only with GREENbarTM 700
series fuel line.
-
9
LTX Tractors
%NGINE
%NGINE
#HARCOAL
CANISTER
6ENT
Evaporative (EVAP) emissions system
The EPA has enacted rules that regulate the amount of vapors an engine’s fuel system is allowed to vent to the
atmosphere. The rules are know as Tier III Emissions Standards. These rules apply to all engines built on or after 1/
1/2012. Some of the requirements of tier III emissions include:
• Tethered fuel caps.
• Unvented fuel caps.
• Low permeation (GREENbar
• Roll over valve vents
The fuel tank has an unvented fuel cap. The fuel tank
vents through the roll over valve. The vapors will flow
through the vent hose (black hose with a red trace) to the
engine.
connector, is a Cub Cadet system, meaning warranty and
parts are handled by Cub Cadet.
facturer, but on most engines the vent hose will go to the
air intake manifold.
See Figure 2.9.
The EVAP system, from the fuel tank up to the engine
The engine side of the system varies by engine manu-
TM
) fuel line
Roll over valve
49 state fuel system
Figure 2.9
Fuel cap
Fuel tank
NOTE: Units sold in California will have a charcoal
canister to further reduce the amount of
emissions that escape from the fuel system.
The fuel tank will vent through the charcoal
canister. The charcoal in the canister will act
as a filter and remove some of the vapors
that are venting out of the fuel tank.
A second vent hose connects the canister to
the engine. As the engine runs, the vacuum
in the intake manifold will draw the vapors
out of the charcoal, recharging it.
See Figure 2.10.
NOTE: A leak in the vent hose will allow dirt injec-
tion into the engine. This will not affect
engine performance until the dirt ingestion
has cause damage inside the engine.
Fuel tank
California fuel system
Figure 2.10
10
Engine Ralated Parts
T roubleshooting
Symptom Cause
Engine starts, then dies A blockage in the vent hose.
The roll over valve is stuck closed.
Engine runs rich Raw gasoline in the charcoal canister (if equipped).
A blockage in the line between the charcoal canister (if
equipped) and the intake manifold.
Engine runs lean Wrong fuel cap installed.
Leak in the vacuum lines.
Gasoline vapor escaping from
the engine
The charcoal canister (if equipped) is saturated.
A blockage in the line between the charcoal canister (if
equipped) and the intake manifold.
Wrong fuel cap installed.
Leak in the vacuum lines.
11
LTX Tractors
Roll over valve vent
To remove the roll over valve:
1. Open the hood.
2. Disconnect the vent hose. See Figure 2.11.
NOTE: The vent hose will have a red trace.
3. Gently pry the roll over valve out of the fuel tank.
See Figure 2.12.
4. Inspect the rubber grommet, replace if damaged.
To install the roll over valve:
Vent hose
Figure 2.11
Roll over valve
1. With the grommet on the roll over valve, install the
roll over valve by pressing it into the opening in the
tank.
2. Attach the vent hose to the roll over valve.
3. Test run the engine in a safe area befo re retur nin g
to service.
Figure 2.12
12
Testing the roll over valve
15 in.Hg.
Figure 2.13
Engine Ralated Parts
The roll over valve vent has two functions. The first
function is to vent the tank and the second function is to
close off the vent if the tank is inverted.
Test the roll over valve by:
1. Remove the roll over valve by following the steps pre viously described in this section.
2. Connect a vacuum pump to the roll over valve.
3. Hold the roll over valve in an inverted position.
4. Apply a vacuum to the roll over valve.
See Figure 2.13.
NOTE: The roll over valve should hold 15 in.Hg. for 15
seconds.
Zero reading
Figure 2.14
5. With the vacuum still applied, turn the roll over valve
over.
See Figure 2.14.
NOTE: The vacuum should be relieved.
6. If the results do not match what is listed above,
replace the roll over valve.
13
LTX Tractors
14
Steering alignment
Center the sector gear
CHAPTER 3A: STEERING
IMPORTANT: The front tires will have a “TOE-IN” between
1/16” and 1/4” to allow the unit to track properly.
1. Check the tire pressure in the front tires and make
certain that they are at approximately 14 PSI. The
rear tires should be at 10 PSI.
2. Place the unit on level ground.
3. Lower the deck lift lever to the lowest position.
4. Line up the centering hole in the sector gear with the
centering hole in the support plate, and insert a 1/4”
Phillips screw driver up through both.
See Figure 3A.1.
Steering
Figure 3A.1
Measure rim-to-rim at the front and back of rim
Measure rim-to-rim at the front and back of rim
Figure 3A.2
NOTE: The steering wheel should be in the straight for-
ward position. If it is not, remove the steering
wheel and reinstall it so that it is.
5. In front of the axle, measure the distance horizont ally
from the inside of the left rim to the inside of the right
rim.
See Figure 3A.2.
6. From behind the axle, measure the distance horizontally from the inside of the left rim to the inside of the
right rim.
7. The measurement taken in front of th e axle should be
between 1/16” and 5/16” less than the measurement
taken behind the axle. If not, perform the following
steps:
15
LTX Tractors
8. Loosen the jam nut at the rear of the right ball joint
that secures the ball joint to the drag link, using a 1/
2” wrench and an 11/16” wrench.
9. Remove the hex nut and lock washer, that secures
the right ball joint to the right axle assembly, using a
1/2” wrench and a 9/16 wrench.
10. Remove the right hand ball joint from the right hand
drag link.
1 1. Remove the left hand ball joint performing steps 8, 9
and 10 above.
12. Place the left and right tire assemblies in the straight
forward position.
13. Set the toe-in for the rim assemblies to 3/16”.
14. Thread the right hand ball joint onto the right hand
drag link until the mounting hole in the right hand axle assembly lines up with the ball joint.
NOTE: Count the number of turns the ball joint was rotated onto the drag link. This number should be within a
couple of turns of the left side. If there is more than a couple turns difference, then one or both of the
drag links are bent.
See Figure 3A.3.
Jam nut
Figure 3A.3
15. Secure the right hand ball joint to the right hand axle assembly with the lock washer and nut removed earlier,
using a 1/2” wrench and a 9/16” socket
16. Secure the right hand ball joint jam nut to the right hand drag link using a 1/2” wrench and an 11/16” wrench.
17. Install the left hand ball joint using steps 14, 15 and 16.
16
Axles
Figure 3A.4
Identification mark
Steering
NOTE: The left and right axle have a “L” or a “R” stamped
on the end of the shaft for identification.
See Figure 3A.4.
1. Jack up the front end of the tractor and securely place
on jack stands.
2. Remove the front wheel by popping the hub cap off
with a flat head screw driver.
Castellated washer
Figure 3A.5
1/2” wrench
3. Remove the cotter pin and the castellated washer.
See Figure 3A.5.
NOTE: When installing the wheel, install a new cotter pin
in between the uprights of the castellated washer.
4. Remove the nut holding the drag link to the steering
block using a 1/2” and 9/16” wrench.
See Figure 3A.6.
Figure 3A.6
9/16” wrench
17
LTX Tractors
5. Support the axle and remove the steering block
using two 1/2” wrenches.
NOTE: The SLT models do not have a spacer.
See Figure 3A.7.
Steering block
Spacer
Figure 3A.7
6. Remove the spacer and lower the axle out of the
pivot bar.
NOTE: Starting in the 2010 season, some tractors
will be equipped with a stamped pivot bar.
These tractors will have plastic bushing
where the axle rides inside the pivot bar.
See Figure 3A.8.
NOTE: The procedure to remove this axle is the
same as previously described. When install
ing the axle, install new upper and lower
bushings.
7. Install the axle by following the previous steps in
reverse order.
8. Perform a wheel alignment by following the steps described in the steering a lignment section of this chapter.
9. Test run the tractor in a safe area before ret ur ning it to ser vice.
Bushings
-
Figure 3A.8
18
Sector gear and steering pinion gear
Steering Pinion Ge ar
Flange Lock Nut
Figure 3A.9
Remove the washer
Steering
If you are replacing the sector gear or steering pinion
gear, check the condition of both gears for any wear or
damage. It may be wise to replace both as a set.
1. Remove the cutting deck by following the steps
described in Chapter 8: Cutting Decks and Lift Shaft
2. Jack up the front end of the tractor and securely
place on jack stands.
3. Remove the flange lock nut securin g the stee ring pi nion gear to the steering shaft using an 1 1/16” socket.
See Figure 3A.9.
Lift up on the steering shaft
Figure 3A.10
Remove the hex
bushing
4. Slide the steering pinion gear off of the steering shaf t.
5. Lift up on the steering shaft an d remove the washer.
See Figure 3A.10.
6. Push the steering shaft up through the frame of the
tractor.
7. Remove the hex bushing. See Figure 3A.11.
Figure 3A.11
19
LTX Tractors
8. Remove the drag links from the sector gear.
9. Remove the six screws that secure the steering
plate to the frame.
10. Remove the steering plate.
See Figure 3A.12.
Remove these screws on each side
Figure 3A.12
11. Remove the hex cap screw, shoulder spacer and
hex nut in the middle of the sector gear using two 9/
16” wrenches.
NOTE: Note the order the sp acers and washer were
removed so that they can be installed prop
erly. See Figure 3A.14.
12. Remove the bolt that the sector gear pivots on using
two 9/16” wrenches.
NOTE: When installing the sector gear, coat the
sector gear and the steering plate with a
high quality lithium grease.
13. Install the steering and steering pivot gears by following the previous steps in reverse order.
See Figure 3A.13.
-
See Figure 3A.13.
sector gear
Steering plate
Figure 3A.13
14. Perform a wheel alignment by following the steps
described in the steering alignment section of this
chapter.
15. Test run the tractor in a safe area before returning it
to service.
20
Figure 3A.14
Steering shaft and he x bushing
Figure 3A.15
Steering
To remove the steering shaft or to replace the hex bushing:
1. Remove the cutting deck by following the steps
described in Chapter 8: Cutting Decks and Lift Shaft
2. Jack up the front end of the tractor and securely
place on jack stands.
3. Remove the steering wheel
3a. Remove the cover from the center of the steer-
ing wheel. See Figure 3A.15.
Figure 3A.16
Steering Pinion Ge ar
Flange Lock Nut
Alignment hole
NOTE: The cover can be released by prying-in on the
lock-tabs on the under-side of the steering wheel.
See Figure 3A.16.
3b. Remove the bolt that holds the steering wheel
to the steering shaft using a 1/2” wrench.
3c. Lift the steering wheel off of the steering shaft.
.
4. Remove the flange lock nut securin g the stee ring pi nion gear to the steering shaft using an 11/16” socket.
See Figure 3A.17.
NOTE: If the steering shaft rotates while removing the nut,
insert a pin punch or a #2 phillips screwdriver into
the alignment hole in the sector gear. This will lock
the steering shaft in place, allowing the nut to be
removed.
5. Slide the steering pinion gear off of the steering
shaft.
Figure 3A.17
21
LTX Tractors
6. Lift up on the steering shaf t and remove the washer.
See Figure 3A.18.
7. Push the steering shaft up thro ugh the frame of the
tractor.
8. Remove the hex bushing. See Figure 3A.11.
NOTE: Replace the hex bushing every tim e th e
steering shaft is removed.
9. Remove the drag links from the sector gear.
Remove the washer
Lift up on the steering shaft
Figure 3A.18
Remove the hex
bushing
10. Remove the six screws that secure the steering
plate to the frame.
11. Remove the steering plate.
NOTE: The steering shaft will come out with the
steering plate..
12. Install the steering shaft by following the above
steps in reverse order.
13. Test run the tractor in a safe area before returning it
to service.
22
See Figure 3A.12.
Figure 3A.19
Remove these screws on each side
Figure 3A.20
Pivot bar
Remove this bolt
Figure 3A.21
Steering
To remove/replace the pivot bar:
1. Jack up the front end of the tractor and securely place
on jack stands.
2. Remove the axles by following the procedures
described in the axle section of this chapter.
3. Slide the front deck link out of the frame.
4. Support the pivot bar.
5. Remove the pivot bar pivot bolt using two 3/4”
wrenches.
6. Slide the pivot bar out of the frame.
See Figure 3A.21.
Spacer
Figure 3A.22
NOTE: There is a spacer in the center of the pivot bar. It
must be in place when installing the pivot bar.
See Figure 3A.22.
NOTE: Starting in the 2010 season, there will be a
stamped pivot bar on some models. The proce
dure to remove it is the same as the cast iron pivot
bar described in the previous steps.
See Figure 3A.23.
7. Install the pivot bar by following the previous steps in
reverse order.
-
Stamped pivot bar
Figure 3A.23
NOTE: Apply high quality grease to the frame, spacer an d
the pivot bar.
8. Preform a wheel alignment by following the steps
described in the steering alignment section of this
chapter.
9. Test run the tractor in a safe area before returning it
to service.
23
LTX Tractors
24
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